T. Honda et al., STEREOSELECTIVE SYNTHESIS OF PETROSTEROL AND A FORMAL SYNTHESIS OF ARAGUSTEROLS, Journal of the Chemical Society. Perkin transactions. I, (18), 1996, pp. 2291-2296
Stereoselective construction of a steroidal side chain containing a 26
-27 cyclopropane ring, compound 22, has been achieved by an intramolec
ular cyclisation of the corresponding beta-methylsulfonyloxy cyanide 1
6, derived from a chiral cyclopentane derivative. Compound 22 has been
further utilised in the synthesis of the naturally occurring steroid
petrosterol 3.